Merge pull request #767 from wlynch/sourcedateepoch #685

Job	Run time
Build melange and add to artifact cache	2m 25s
Build packages (hello-wolfi)	1m 32s
Build packages (glibc)	13m 58s
Build packages (tini)	1m 7s
Build packages (lzo)	1m 13s
Build packages (bubblewrap)	1m 16s
Build packages (gdk-pixbuf)	1m 25s
Build packages (gitsign)	4m 4s
Build packages (guac)	4m 27s
Build packages (mdbook)	5m 18s
Build packages (s3cmd)	1m 21s
Build packages (perl-yaml-syck)	1m 25s
Build packages (xmlto)	1m 7s
Build packages (ncurses)	2m 50s
	43m 28s

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